Improvement in molding-machines



H. A. LEE. MOLDING MACHINE..

No. 40,269. Y Patented Oct. 13, 1863..

w: cams vzrzns co.. Pnooumc., WASHINGTON, u. c.

UNITED STATES PATENT OFFICE.

HENRY A. LEE, OF WORCESTER, MASSACHUSETTS.

IMPROVEMENT IN MOLDING-MACHINES.

Specification forming part ot' Letters Patent No. 40,269, dated October13, 1863.

To all whon'z, it may concern:

Be it known that I, HENRY A. LEE, of Worcester, in the county ofl/Vorcester and State of Massachusetts, have invented certain new anduseful Improvements in Molding- Machines; and I do hereby declare thatthe vfollowing is a full, clear, and exact description of theconstruction and operation ot' the same, reference being had to theaccompanying drawings, in which- Figure 1 represents a side View of saidmachine. Fig. Zrepresents a longitudinal vertical section through thesame. Fig. 3 represents a top view of the same. Fig. 4 represents avertical cross-section through the feed apparatus.

To enableV others skilled in the art .to make' and use my invention, Iwill proceed to describe its construction and operation.

A represents the frame of the machine.

B represents the bed-plate on which the lumber is placed,v v

' C represents the rests by which the lumber is held in its properposition while acted upon by the cutters.

D and E represent the feed-rollers, which feed the-stuff to the cutters.The feed-roller D is grooved spirally for the purpose of pressing thelumber against the rests C during the operation of feeding. Itis securedto the horizontal shaft F, vwhich is supported by the journal-boxes a bwithin the standards Gr H, and it is operated by means of the gear-wheell and screw-shaft K, the latter receiving its motion by means of thecone-pulleys L and M from the main driving-shaft. The feed-roller D andits shaft F can be adjusted longitudinally by means of the collar c,which is secured` to the shaft by setscrew 2, and rests against thejournal-box b. It can also beadjusted vertically to the thickness ofthelumber by means of the adjustingscre-Ws dand e, which pass through thestandards G and H and through the journalvboxes a Z. The end -of theadjusting-screw d is secured to a lritirrup, j', and the latter isconnected Witt a spring, g, which is secured to the frame A. By thisarrangement the feed-roller D is' made yielding and to operatee'ectually on the' lumber should it not be ot' the same thicknessthroughout. The position of the lower roller, E, can be adjusted vrtca-lly by means of the set-screws h 1'., which are made to operateupon its journal-boxes 7c l, which vare set into proper recesses of theframe A. The feed-roller E is operated by means ot' the gear-wheels N O,gear-wheel P, and screw- 'shatt Q. The rests O are secured toguideblocks 3, which can slide in the grooves 4' of the bedplate, andtheir position can be adjusted laterally by operating the screw-shafts5, which have their bearings in both sides of the frame A.

It represents the rotating vert-ical cutterheads for cutting the moldingou the sides of the material. They are supported by means of thejournal-boxes m and o, the two being connected by a vertical hanger, n,which passes down from m to o. The two boxes or blocks are supported bymeans of the horizontal guide-rods p and 7, and can be adjusted thereonlaterally by means of the adjusting-screws 6. rlhe cutter-heads can alsobe adjusted vertically by means of screw 8 of journal-box o, and aresecured in'a'ny desired position by means 'if the set-screw 9.

o' represents bed-plates which are secured to the top of thejournal-boxes m to support the stuit' while acted upon by thecutter-heads. They have circular recesses 10 to prevent the cutters fromcoming in contact with them, and being secured to the journal-boxes.They move with them when the latter are adjusted. By employing thesesmall bed-plates 1*, I am ena-bled to dispense with the full bed-plateof the machine around the cutter-heads, thereby leaving large spacesthrough which the shavings may drop, thus fccfing the `cutter-headsclear and in view ofthe operatorandenabling the latter to adjust theirpositions by means of the screw-shafts 6 without arresting the vmotionof the machine. The cutter-"heads R A stron s rinff a. of india-rubberor otherma.terial,'is set into thcboxes ll, sons to press cured to thehorizontal part of the cutter'-l -'rame S by means of the screws l5,which pass through slots 16, and thereby permit said frames to beadjusted in relation to the horizontal cutters.

T represents the horizontal cutter-head. The bearings of its cen tershat't are supported by the boxes c ot' the cutter-frame S. Thiscutter''rame is secured to the Vertical part of the main frame A bymeans ot' the bolts b which pass through slots in the frame A, and

.it can be raised and lowered by means of the screw shaft B, whichpasses through the main frame A and through the lug 17 ot' the frame S.The cutter-head T has four sides, to which the cutters are attached,instead of using two cutters only attached to the opposite side of thehead. Thus I may use cutters m n', which are set alternately on thehead, and which are shaped for different molds, and by this arrangementI am enabled to equalize the work and prevent the cutter from choppingout the wood, as is the case when two only are used. I secure thecutter-blades t0 the head by means of screw-bolts, the heads of whichpass into T-shaped recesses 18 of the cutter-head, and they are fastenedto it by means of the short 'plates 19 and screwnuts A20. When thelmolding has a straight edge,

the latter ca'n be cut by these sa'me cutters, and I therefore' make acircular cavity, g', in the bedplate B and right under the cutterhead toenable the cutters to operate upon the edges of the material withoutstriking the bed-plate. af represents another presser-bar. Its ends aresupported by means of the brackets y, which are secured to thecutter-frame S, and it can be raised or lowered by operating the screwsz. The hanger U is secured to the bar w, and can be adjusted thereonlaterally. It has two jaws, 2l and 22. The former is stationary, thelatter' is hinged 'to the former, and they can be compressed bymeans ofthe screw 23. A piece ot wood is secured be` tween the jaws of thishanger, which is to press upon the molded material as it passes from thecutting-cylinder, as represented in red lines in Fig. 5; or a piece ofwood may be secured for the same purpose to the bottom plate of thehanger by means of screws, which piss through the holes 24.

V represents another horizontal cuttiu g or planing' vcylinder for thepurpose of planing or molding the lower side of the material. It isprovided with cutters in a similar manner as the cutter-head T. Thematerial is pressed down upon the bed-plate B by means of the hanger Xon cross-bar 25, the ends of which are suspended to the screw-shaft 426in. the

frames Y, and thus the hanger X can be raised or lowered. A block ofwood is secured to the lower face of the hanger X and presses and M andscrew-shaft, Q. The lumber being placed upon bed B, the fced-rollerD isscrewed down upon the lumber by turning the Screwshafts e and d. Thespiral cogs on the feed-roll er D press the lumber against the rest-s Cwithout using springs or other devices for that purpose. By means of thecrank D on screw-shaft Q K the lumber can be drawn back or forward, tohe examined by the operator if the work is properly performed. As thefeed-rolls move the work toward the cutters the feed-roll D rises andldescends with the different thicknesses of the material. The Work isacted upon by the cutters of the cutterheads B, passed under theyielding press-bar lw, under the horizontal cutter cylinder T, whichcuts the molding on the upper face, while by the arrangement abovedescribed the lumber is held down by the hanger U, and, as the presserw, cylinder T, and hanger U are all secured `to the adjustable frame S,they can all be adjusted siinultanteously by turning the screw-shaft B.The lumber now passes under the presser X and over the cutter-cylinderV, 4wherev the lower side is operated upon.

By the construction of the boxes t, which support the press-bar s, I amenabled to adjust the degree ot' pressure upon the lumber by adjustingthe screws 12; but under any degree of pressure the bar s and shoe wwill be -able to yield by reason of the spring or elastic bolster a',which is interposed between the action of the screw 12 and the press-bars, as represented by a vertical section at Fig. 6.

Having thus fully described the nature of my invention, what I claimherein as new, and desire to secure by Letters Patent, is-

1. Securingtheadjustablejournal-boxaofthe feed-roller shaft F to thestirrupf and spring g, for the purpose of making said feed-rolleryielding to the unequal thickness of the lumber, substantially in themanner herein described. l

2. In combination with the adjustable rests C, the spirally-groovedfeed-roller D,.for the purpose of pressing the lumber' against saidrests while it is fed forward, substantially as herein set forth.

3. In rcombination lwith the vertical cuttcr heads It, `the boxes m o,hanger n, shafts p, 6, and 7, adjusting and set-screws 8 9, for thepurpose of adjusting said cutter-heads horizontally and vertically'without arresting the motion of the machine, substantially as herein setforth. f

4. In combination with the yielding crossbar s, press-shoew, and itsrollers 14, sub.

stantially in the manner and for the purposes set forth.

5. Securing the press-bars s and .fr in front and to the real-of thehorizontal cutting-cylinder T, to the adjustable frame S of saidcutting-cylinder, soas to enable the operator to adjust themsimultaneously, substantially as herein described.

6. The concave g' in the bed-plate B, and under the cutter-cylinder T,to prevent the cutters from striking the bed-plate While operating onthe edges of the lumber.

7. The adjustable hanger U, secured to the press-bar or, and whenconstructed and operated substantially 'in the manner and for thepurposes set'forth.

8. The arrangement of the pulleys z and z with the belts for driving theshaft 9 of. the

cutter-heads RR, by means of which I am en- HENRY A. LEE.V

Witnesses:

ALLIN MAYER, H. C. Rien.

